A novel coronavirus pneumonia strain B.1.525 was first discovered in the nasopharyngeal swab of two cases of imported new crown pneumonia in Guangdong in March 14th. The CDC issued a circular in March 14th.
This is the first time that the mutant appeared in China and the third time that Guangdong CDC has found a new coronavirus mutantJanuary 2ndA novel coronavirus pneumonia strain was identified in a swab sample of a British confirmed case of new crown pneumonia.January 6thA novel coronavirus pneumonia strain 501Y.V2 was isolated from throat swabs imported from a foreign country.
According to reports, the two cases involved were asymptomatic infections imported from abroad, which were found in closed-loop management. They were reported as asymptomatic infections on February 21 and February 22 respectively, and are still under centralized medical observation in the hospital.
On March 5, Guangdong CDC received nasopharyngeal swab samples from Guangzhou CDC and immediately carried out virus isolation and genome sequencing analysis.
In the morning of March 12, the sequencing analysis of the original sample showed that it was b.1.525 subtype, a Nigerian mutant.
At present, the Nigerian mutant of the new coronavirus has spread in 26 countries around the world.
Research reports have found that,The Nigeria mutant strain novel coronavirus pneumonia can increase the transmission of virus, which may lead to antibody escape and escape.
however,The mutants from England, South Africa and Nigeria can be captured by the sensitive disease surveillance system of Guangdong Province, which can be put into closed-loop management in time, resulting in minimal risk of community infection.
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